US5157267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Driving apparatus for starting an engine with a starter motor energized by a capacitor
Assignee: Isuzu Motors Ltd
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Filing: 1990-03-28
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Granted: 1992-10-20
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Expires: 2010-03-28
Abstract
Abstract An engine starter system for driving an engine starter with electric power from a battery mounted on a motor vehicle has a boost controller for boosting electric power from the battery and a large-capacitance capacitor which is charged by the electric power which is boosted by the boost controller. The engine starter is driven by the electric energy which is stored in the capacitor at a voltage higher than the voltage of the battery.
Inventors
- 👤 Akihiro Shirata
- 👤 Yoshinobu Tsuchiya
- 👤 Ken Kurabayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:15
CPC Classifications
F; F02; F02N; F02N11/00; F02N11/08; F02N11/0862; F02N11/0866; F02N2011/0881; F02N2011/0885; F02N2011/0888
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
121 words
A driving apparatus supplying electric power to a starter motor coupled to a crankshaft of an engine mounted on a motor vehicle for driving the starter motor, and starting the engine with the starter motor, said driving apparatus comprising: a battery; an engine starter for starting an engine with electric power from said battery; boost control means connected to said battery for boosting electric power from said battery; a large-capacitance capacitor connected to said boost control mean sand chargeable by the boosted electric power from said boost control means; a starter switch connected to said battery parallel to said capacitor; and energizing means for energizing said engine starter with electric energy stored in said capacitor when said starter switch is closed.
Claim 2
Dependent Claim
121 words
A driving apparatus supplying electric power to a starter motor coupled to a crankshaft of an engine mounted on a motor vehicle for driving the starter motor, and starting the engine with the starter motor, said driving apparatus comprising: a battery; an engine starter for starting an engine with electric power from said battery; boost control means connected to said battery for boosting electric power from said battery; a large-capacitance capacitor connected to said boost control mean sand chargeable by the boosted electric power from said boost control means; a starter switch connected to said battery parallel to said capacitor; and energizing means for energizing said engine starter with electric energy stored in said capacitor when said starter switch is closed.
Claim 3
Dependent Claim
16 words
A driving apparatus according to claim 1, wherein said capacitor comprises an electric double layer capacitor.
Claim 4
Dependent Claim
63 words
A driving apparatus according to claim 1, wherein said boost control means comprises: a boost transformer for increasing the voltage of the electric power from said battery; a switching circuit for converting a current from said battery into a pulsating current flowing through said boost transformer; and a rectifying circuit for rectifying the pulsating current whose voltage is increased by said boost transformer.
Claim 5
Dependent Claim
23 words
A driving apparatus according to claim 1, wherein said starter switch includes a manually operable switch contact for energizing said boost control means.
Claim 6
Dependent Claim
25 words
A driving apparatus according to claim 1, further comprising voltage indicator means connected to said capacitor, for detecting and indicating the voltage across said capacitor.
References Cited (Backward Citations)
US4467748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-10-20 | 1996-04-20 | 1996-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-20 | 2000-04-20 | 2000-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-20 | 2004-04-20 | 2004-10-20 | $7700.00 | Window Closed / Lapsed |